class Cat:
    @staticmethod
    def start():
        print('start')
    @classmethod
    def stop(cls):
        print('stop')
    def __init__(self,name):
        self.name = name
    def miao(self):
        print("miao~~~~~~~~")
cat =Cat('小白')
print(cat.name)
cat.miao()
#print(Cat.name)实例属性不能通过类名调用
#Cat.miao()实例方法不能通过类名调用
Cat.stop()

